Chapter Title

What you'll learn

• Learning objective 1
• Learning objective 2
• Learning objective 3

Explanation

Short sections with one idea at a time.

Example

If this chapter is interactive, wrap the code block with <div class="py-run" markdown="1">...</div>.

# Add a runnable, minimal example
print("hello")

Common mistakes

• Mistake 1 and why it happens
• Mistake 2 and how to avoid it

Exercises

Link to exercise files in docs/exercises/<part>/.

Further reading

• Official docs page
• Relevant PEP
• High-quality external article